| #include <stdio.h> |
| #include <stdlib.h> |
| #include <inttypes.h> |
| |
| #include <openbsc/gprs_llc.h> |
| #include <openbsc/gprs_utils.h> |
| |
| #include <openbsc/debug.h> |
| |
| #include <osmocom/core/application.h> |
| #include <osmocom/gsm/gsup.h> |
| |
| #define ASSERT_FALSE(x) if (x) { printf("Should have returned false.\n"); abort(); } |
| #define ASSERT_TRUE(x) if (!x) { printf("Should have returned true.\n"); abort(); } |
| |
| /** |
| * GSM 04.64 8.4.2 Receipt of unacknowledged information |
| */ |
| static int nu_is_retransmission(uint16_t nu, uint16_t vur) |
| { |
| int ret = gprs_llc_is_retransmit(nu, vur); |
| printf("N(U) = %d, V(UR) = %d => %s\n", nu, vur, |
| ret == 1 ? "retransmit" : "new"); |
| return ret; |
| } |
| |
| static void test_8_4_2() |
| { |
| printf("Testing gprs_llc_is_retransmit.\n"); |
| |
| ASSERT_FALSE(nu_is_retransmission(0, 0)); |
| ASSERT_TRUE (nu_is_retransmission(0, 1)); |
| |
| /* expect 1... check for retransmissions */ |
| ASSERT_TRUE (nu_is_retransmission(0, 1)); |
| ASSERT_TRUE (nu_is_retransmission(511, 1)); |
| ASSERT_TRUE (nu_is_retransmission(483, 1)); |
| ASSERT_TRUE (nu_is_retransmission(482, 1)); |
| ASSERT_FALSE(nu_is_retransmission(481, 1)); |
| |
| /* expect 511... check for retransmissions */ |
| ASSERT_FALSE(nu_is_retransmission(0, 240)); // ahead |
| ASSERT_FALSE(nu_is_retransmission(0, 511)); // ahead |
| ASSERT_FALSE(nu_is_retransmission(1, 511)); // ahead |
| ASSERT_FALSE(nu_is_retransmission(511, 511)); // same |
| ASSERT_TRUE (nu_is_retransmission(510, 511)); // behind |
| ASSERT_TRUE (nu_is_retransmission(481, 511)); // behind |
| ASSERT_FALSE(nu_is_retransmission(479, 511)); // wrapped |
| } |
| |
| static void test_gprs_timer_enc_dec(void) |
| { |
| int i, u, secs, tmr; |
| const int upper_secs_test_limit = 12000; |
| int dec_secs, last_dec_secs = -1; |
| |
| printf("Test GPRS timer decoding/encoding\n"); |
| |
| /* Check gprs_tmr_to_secs with all 256 encoded values */ |
| for (u = 0; u <= GPRS_TMR_DEACTIVATED; u += 32) { |
| fprintf(stderr, "Testing decoding with timer value unit %u\n", |
| u / 32); |
| for (i = 0; i < 32; i++) { |
| switch (u) { |
| case GPRS_TMR_2SECONDS: |
| OSMO_ASSERT(gprs_tmr_to_secs(u + i) == 2 * i); |
| break; |
| |
| default: |
| case GPRS_TMR_MINUTE: |
| OSMO_ASSERT(gprs_tmr_to_secs(u + i) == 60 * i); |
| break; |
| |
| case GPRS_TMR_6MINUTE: |
| OSMO_ASSERT(gprs_tmr_to_secs(u + i) == 360 * i); |
| break; |
| |
| case GPRS_TMR_DEACTIVATED: |
| OSMO_ASSERT(gprs_tmr_to_secs(u + i) == -1); |
| break; |
| } |
| |
| OSMO_ASSERT(gprs_tmr_to_secs(u + i) < upper_secs_test_limit); |
| } |
| } |
| |
| /* Check gprs_secs_to_tmr_floor for secs that can exactly be |
| * represented as GPRS timer values */ |
| for (i = 0; i < GPRS_TMR_DEACTIVATED; i++) { |
| int j; |
| secs = gprs_tmr_to_secs(i); |
| tmr = gprs_secs_to_tmr_floor(secs); |
| OSMO_ASSERT(secs == gprs_tmr_to_secs(tmr)); |
| |
| /* Check that the highest resolution is used */ |
| for (j = 0; j < tmr; j++) |
| OSMO_ASSERT(secs != gprs_tmr_to_secs(j)); |
| } |
| OSMO_ASSERT(GPRS_TMR_DEACTIVATED == gprs_secs_to_tmr_floor(-1)); |
| |
| /* Check properties of gprs_secs_to_tmr_floor */ |
| for (secs = 0; secs <= upper_secs_test_limit; secs++) { |
| int tmr = gprs_secs_to_tmr_floor(secs); |
| int delta_secs = gprs_tmr_to_secs((tmr & ~0x1f) | 1); |
| dec_secs = gprs_tmr_to_secs(tmr); |
| |
| /* Check floor */ |
| OSMO_ASSERT(dec_secs <= secs); |
| /* Check monotonicity */ |
| OSMO_ASSERT(dec_secs >= last_dec_secs); |
| /* Check max distance (<= resolution) */ |
| OSMO_ASSERT(dec_secs - last_dec_secs <= delta_secs); |
| |
| last_dec_secs = dec_secs; |
| } |
| } |
| |
| const struct log_info_cat default_categories[] = { |
| [DGPRS] = { |
| .name = "DGPRS", |
| .description = "GPRS Packet Service", |
| .enabled = 0, .loglevel = LOGL_DEBUG, |
| }, |
| }; |
| |
| static struct log_info info = { |
| .cat = default_categories, |
| .num_cat = ARRAY_SIZE(default_categories), |
| }; |
| |
| int main(int argc, char **argv) |
| { |
| osmo_init_logging(&info); |
| |
| test_8_4_2(); |
| test_gprs_timer_enc_dec(); |
| |
| printf("Done.\n"); |
| return EXIT_SUCCESS; |
| } |